How to Claim a Tax Refund in the UK (Free, Direct)
Claiming a UK tax refund is free and usually automatic. Around 700,000 people receive refunds in a typical year – here is exactly how to check you are one of them.
Step 1 – check you actually overpaid
Refunds are most common after a wrong tax code, a job change without a P45, a second job on an emergency (BR) code, or benefits in kind being taxed twice. If any of these sound familiar, it is worth checking.
Get a quick estimate first
Enter your salary and the tax deducted to see whether you may have overpaid.
Check for a tax refund →Step 2 – claim through the right channel
| Situation | How to claim |
|---|---|
| PAYE employee who overpaid | Automatic – HMRC sends a P800 and refunds you directly |
| HMRC does not know about your income | Form R40 (e.g. untaxed savings interest or dividends) |
| Self-employed | Through your Self Assessment return |
| Any case | Update your details in your Personal Tax Account |
Step 3 – mind the 4-year time limit
You can claim within 4 years of the end of the tax year in which you overpaid. For example, 2022/23 overpayments must be claimed by 5 April 2027. See how far back you can claim for the full table.
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FAQs
How do I claim a tax refund from HMRC?
Most refunds are automatic via a P800. For income HMRC does not know about, use form R40. You can manage it all through your Personal Tax Account.
Is claiming a tax refund free?
Yes – claiming directly from HMRC is free. Beware fee-charging refund agents and scams.
What is a P800 tax refund?
The tax calculation HMRC sends after the year ends when you overpaid; the refund is paid automatically into your bank account.